400737340032 has 64 divisors (see below), whose sum is σ = 1089213454560. Its totient is φ = 130472616960.

The previous prime is 400737340013. The next prime is 400737340057. The reversal of 400737340032 is 230043737004.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×400737340032² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 400737339975 and 400737340002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12118219 + ... + 12151242.

Almost surely, 2^400737340032 is an apocalyptic number.

It is an amenable number.

400737340032 is an abundant number, since it is smaller than the sum of its proper divisors (688476114528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400737340032 is a wasteful number, since it uses less digits than its factorization.

400737340032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24269521 (or 24269509 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 33.

The spelling of 400737340032 in words is "four hundred billion, seven hundred thirty-seven million, three hundred forty thousand, thirty-two".